-er b-p bbb bbe bbi bbp bbr bbs bbt be- beb bee bei bep ber bes bet bi- bib bie bii bip bir bis bit bpb bpe bpi bpp bpr bps bpt brb bre bri brp brr brs brt bsb bse bsi bsp bsr bss bst btb bte bti btp btr bts btt ebb ebe ebi ebp ebr ebs ebt eeb eee eep eer ees eet eib eie eii eip eir eis eit ep- epb epe epi epp epr eps ept erb ere eri erp err ers ert es- esb ese esi esp esr ess est etb ete eti etp etr ets ett ibb ibe ibi ibp ibr ibs ibt ie- iee iei iep ier ies iet iib iie iii iip iir iis iit ipb ipe ipi ipp ipr ips ipt ir- irb ire iri irp irr irs irt is- isb ise isi isp isr iss ist itb ite iti itp its itt p-p pbb pbe pbi pbp pbr pbs pbt peb pee pei pep per pes pet pib pie pii pip pir pis pit ppb ppe ppi ppp ppr pps ppt prb pre pri prp prr prs prt ps- psb pse psi psp psr pss pst pt- ptb pte pti ptp ptr pts ptt rbb rbe rbi rbp rbr rbs rbt re- reb ree rei rep rer res ret rib rie rii rip rir ris rit rpb rpe rpi rpp rpr rps rpt rrb rri rrp rrr rrs rrt rsb rse rsi rsp rsr rss rst rtb rte rti rtp rtr rts rtt sbb sbe sbi sbp sbr sbs sbt se- seb see sei sep ser ses set sib sie sii sip sir sis sit spb spe spi spp spr sps spt sr- srb sre sri srp srr srs srt ss- ssb sse ssi ssp ssr sss sst stb ste sti stp str sts stt tbb tbe tbi tbp tbr tbs tbt te- teb tee tei tep ter tes tet tib tie tii tip tir tis tit tpb tpe tpi tpp tpr tps tpt trb tre tri trp trr trs trt tsb tse tsi tsp tsr tss tst ttb tte tti ttp ttr tts ttt

bbbb bbbs bbeb bbet bbpr bebb bebe bebi beeb beep beer bees beet beir beis beit bere beri berr bers bert bes- bese bess best bete beti bets bett bibb bibe bibi bibs bieb bier bies biet biis bipp bips birb bire biri birr birs birt bis- bise bisp biss bist bite bits bitt bpti breb bree brei brep brer bres bret brie bris brit brrr brrs brsb brsr brst bseb bsee bser bses bset bspp bspr bsse bsts btbp btie btps btrt btss bttb ebbr ebbs eber ebes ebis ebit eeee eees eeps eers eese eesi eete eets eiei eier eies eipr eire eirs eise eiss eist eitb eiti eitr epee eper epes epi- epie epip epis epit eppp epps eprb eprp eprs epsi epsp epss epte erbb erbe ereb erei erer eres eret erie eris erit erpe erps erre errs erse ersi erst erts esbs esee eser eses eset esie esis esit espe espi espp esps esri esse essi essp esst este estp estr ests etbr etee eter etes etre etsi ette etti i-be ibes ibet ibie ibis ibri ibss ibtb ibts ieet ieie iere ieri iers iesi iesr iest iett iies iiie iiii iiis iiit iirs iisi iisp iisr iist iitr iitt iper ipes ipet ipie ippr ipri ipse ipsi ipsp ipss ipts irbe irbp iree irer ires iri- irie irip iris irpe irps irre irri irrs irse irsp irte irti irtp irts isbe isbt iseb isee isep iser ises iset isie isis isit ispe ispr isps isri isrp isse issi issp issr isss iste isti istp istr ists itbe itbs itep iter ites itet itie itis itri itrs itse itsi itsp pbrs pbsp peep peer pees peet peip peir peis peit pepe pepi peps per- pere peri perp perr pers pert pese pesi pess pest pete peti petr pets pett pibb pibi piep pier pies piet piip pipe pipi pipp pips pire piri pirr pirs pise pisi piss pist pite piti pitr pits pitt pper ppib ppie pppp ppps ppss ppts pptt prbs pre- preb pree prep pres pret pri- prie prii pris prps prri prrs prse prsi prss prti prtp prtr psbr psbt pseb psei psip psis pspi pspp pspr psps psrp psse psst psts pter rbbb rbbr rbbs rbis rbsp rbss rbst rebb rebe rebs reeb reep rees reet reii reir reis reit repe repi repp repr reps rept rere reri rers rert rese resi resp ress rest rete reti retr rets rett rib- ribe ribs riep rier ries riet riis ripe ripi ripp ripr rips ript rire riri rirs rise risi risp riss rist rite riti rits ritt rpet rpii rpps rpts rrrr rrsp rsbi rsee rsis rspb rsps rsre rstp rsts rtee rtei rtes rtps rtss rttp rtts s-ib s-ii sbbs sber sbse sbsi sbsp sbst se-e se-i se-s se-t sebe sebi sebs sebt seeb seep seer sees seet seie seii seip seir seis seit sepe sepi sepp sepr seps sept serb sere seri serp serr sers sert sese sesi sess sest set- sete seti sets sett sibe sibi sibs sier sies siit sipe sipi sipp sips sipt sire siri sirp sirr sirs sirt sise sisi siss sist sit- site siti sits sitt speb spee sper spes spet spib spie spip spir spis spit spps spri sprs spse spsp spss spst sptb sptr spts sreb sres srib sris srps srpt srsp srtp srtr ssbr ssee ssep sses sset ssis ssit sspe ssps sspt ssri ssrs sssb sssi ssss sstb sstp ssts stbs stee step ster stes stet stib stie stip stir stis stit stpp stps stre stri strs stsi stss sttr tbbs tbit tbrb tbsp tbst tbtp teer tees teet teie teip teir teis tepe tepi tepp ter- tere teri terp terr ters tese tesp tess test tete teti tetr tets tett tibi tibs tie- tiee tiei tiep tier ties tiet tiit tip- tipe tipi tipp